~/jwt-encoder/decoder

JWT Encoder/Decoder

Decode, verify, and generate JSON Web Tokens. Runs entirely in your browser.

alg

Encoded Token

headerpayloadsignature

HEADERAlgorithm & Token Type

{
  "alg": "HS256",
  "typ": "JWT"
}

PAYLOADData

{
  "sub": "1234567890",
  "name": "John Doe",
  "admin": true,
  "iat": 1516239022
}

VERIFY SIGNATURE(Optional)

Enter the secret used to sign the JWT:

Secret

Base64URL EncodedValid secret

JSON Web Tokens (JWT) are an open standard RFC 7519 for securely transmitting information between parties. This tool runs entirely in your browser — tokens and secrets never leave your machine.